... No trick questions please, *you* are the math buffs :-) Trying to weasel me out of this one. As I said, the Neuberg cubic may be written as symmetric...
Dear Tuan and all, I apologize because ''my'' proof is wrong. It is based on a property, which at first must be proved. The circumcircles of the triangles...
Dear Kostas Vittas and All My Friends, Thank you for your proof. Your tryings to proof these theorems are surprised and impressive me so much. I admire you. I...
Quang Tuan Bui
bqtuan1962@...
May 1, 2006 3:20 pm
12929
Dear Jeff,Francois, Tuan and all Hyacinthos There is a beautiful book edited by Dover Geometry of Complex Number by Hans Schwertfeder, maybe tou already know...
Dear Tuan. I am sorry again because I sent not my last message earlier ( unfortunately I won your praise while I am not worth ). I located the mistake when I...
Dear Hyacinthists, the correct spelling of the author of the book is Schwerdtfeger...but it is easy miss some letters if one has not the book in the hands. ...
Very good book indeed, I have it already for a long time. You must have it in your pocket! I recall that book is on complex numbers and it's the best way to...
Dear Friends, [BQT] Dear Jeff, I send you here attached file "The complete quadrilateral" (Annals of Mathematics ser. 2,20 (1919) pages 232-261), John W....
Dear Jeff, Thank you very much! I think you don't remember. One time you asked me why I can not access to Hyacinthos file store. After receipt my explanation...
Quang Tuan Bui
bqtuan1962@...
May 2, 2006 2:12 am
12935
Dear Tuan, You are right of course! I just happen to send another message earlier tonight asking for a paper from Francois. I thought maybe I send my message...
Dear Hyacinthos, Okay, I am now reading Francois paper and I see again PGL(2,C). Can someone please tell me what PGL(2,C) is? Thank you, Sincerely, Jeff [FR]...
Dear All My Friends, There are some math theorems easy to formulate but very difficult to proof. One famous example is great Fermat theorem. I want to present...
Quang Tuan Bui
bqtuan1962@...
May 2, 2006 8:37 am
12938
For this matter, before PGL what is GL(2,C); as you know, I don't read or speak well French :-( Sincerely, Jeff P/S I am learning the French language rapidly...
... From: "Jeff Brooks" <trigeom@...> To: <Hyacinthos@yahoogroups.com> Sent: Tuesday, May 02, 2006 10:14 AM Subject: [EMHL] Re: Two New Theorems For...
I thinks there is wisdom here! If only I could I could better understand! P: projective G: group L: linear 2: dimension C: base field ... (REFERENCE)...
... From: "Jeff Brooks" <trigeom@...> To: <Hyacinthos@yahoogroups.com> Sent: Tuesday, May 02, 2006 10:14 AM Subject: [EMHL] Re: Two New Theorems For...
Sorry, Jeff, to do the same error again. PGL(2,C) is simply the group of fractionals z --> (az + b)/(cz +d) acting on the extended complex plane C + {infty}. ...
Dear Friends, Now is as good a time as any! I'll correct my mistakes later (as I learn more :-) I could very well be WRONG! But, this should be easy to check...
Greetings! This may be of your interest: 1. Geometry from the Land of the Incas at: http://www.agutie.com <http://www.agutie.com/> 2. Geometry Theorems and...
To all, I have been interested in the 2 Simmons inconics, which have the Fermat points as perspectors and as a focus. The Fermat point contains a square root...
As always I was suffering from hypothesio praecox :-) The fact that the Neuberg cubic, the Jerabek hyperbola, the circumcircle etc. are curves defined by 3...
This relation AB*CD = AC*BD= AD*BC characterizes not one but two points, to say the isodynamic points #15 and #16, inverse in the circumcircle. François ... ...
Dear Francois and Hauke I don't know if this is useful for finding the points on the Neuberg cubic with the quartet property, but may be (I suspect that there...
Dear All My Friends, There is also one property of these lines. We define one new symbol: A>L = orthogonal projection of point A to line L, i.e perpendicular...
Quang Tuan Bui
bqtuan1962@...
May 3, 2006 2:47 pm
12954
Dear All My Friends, When reading J.W. Clawson "The Complete Quadrilateral", so many times I see in the footnote the "l.c.". (The paper is not clear so I don't...
Quang Tuan Bui
bqtuan1962@...
May 3, 2006 5:15 pm
12955
l.c (Latin) = loco citato, that is: in the passage/work quoted... Eisso ... -- ======================================== Eisso J. Atzema, Ph.D. Department of...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
